Control device and control method

Abstract

A control device for a vehicle that includes a rotating electric machine for driving a vehicle, a power storage device configured to transmit and receive electric power to and from the rotating electric machine, and a cooling device configured to cool the power storage device. The control device includes a processor configured to execute a program to acquire a temperature of the power storage device after charging of the power storage device by an external power source is completed, and to control an operation of the cooling device on a basis of a comparison result between the acquired temperature and a threshold temperature set as a condition for activating the cooling device after charging of the power storage device is completed. The threshold temperature is lower than another threshold temperature during charging set as a condition for activating the cooling device while the power storage device is being charged.

What is claimed is: 
     
         1 . A control device for a vehicle that comprises a rotating electric machine for driving a vehicle, a power storage device configured to transmit and receive electric power to and from the rotating electric machine, and a cooling device configured to cool the power storage device,
 wherein the control device comprises a processor configured to execute a program to:   acquire a temperature of the power storage device after charging of the power storage device by an external power source is completed; and   control an operation of the cooling device on a basis of a comparison result between the acquired temperature and a threshold temperature set as a condition for activating the cooling device after charging of the power storage device is completed, and   wherein the threshold temperature is lower than another threshold temperature during charging set as a condition for activating the cooling device while the power storage device is being charged.   
     
     
         2 . The control device according to  claim 1 , wherein the threshold temperature is a fixed temperature for achieving a predetermined target value set for performance of the power storage device. 
     
     
         3 . The control device according to  claim 1 , wherein the processor is further configured to execute the program to calculate the threshold temperature for achieving a predetermined target value set for performance of the power storage device. 
     
     
         4 . The control device according to  claim 3 , wherein the processor is further configured to execute the program to calculate the threshold temperature to make an average value of the temperature of the power storage device be a target temperature when the power storage device is used for a predetermined period of time. 
     
     
         5 . The control device according to  claim 3 , wherein the processor is further configured to execute the program to:
 acquire an external temperature of the vehicle; and   calculate the threshold temperature on a basis of the acquired external temperature of the vehicle.   
     
     
         6 . The control device according to  claim 1 , wherein the processor is further configured to execute the program to:
 set the vehicle to a sleep state after charging of the power storage device is completed and then activate the vehicle periodically; and   control an operation of the cooling device on a basis of a comparison result between a temperature of the power storage device acquired when the vehicle is periodically activated and the threshold temperature.   
     
     
         7 . The control device according to  claim 1 , wherein the processor is further configured to execute the program to control charging of the power storage device by the external power source. 
     
     
         8 . The control device according to  claim 7 , wherein the processor is further configured to execute the program:
 measure a charging rate of a second power storage device configured to supply electric power to the cooling device; and   charge the second power storage device with the electric power that is provided by the power storage device in a case in which the charging rate of the second power storage device is lower than a threshold charging rate after the cooling device completes cooling of the power storage device after charging of the power storage device is completed.   
     
     
         9 . A control method for a vehicle that comprises a rotating electric machine for driving a vehicle, a power storage device configured to transmit and receive electric power to and from the rotating electric machine, and a cooling device configured to cool the power storage device,
 wherein the control method comprises:   setting, by a computer, the vehicle to a sleep state after charging of the power storage device by an external power source is completed and then activating, by the computer, the vehicle periodically;   acquiring, by the computer, a temperature of the power storage device after charging of the power storage device is completed; and   controlling, by the computer, an operation of the cooling device on a basis of a comparison result between the acquired temperature and a threshold temperature set as a condition for activating the cooling device after charging of the power storage device is completed; and   wherein the threshold temperature is lower than another threshold temperature during charging set as a condition for activating the cooling device while the power storage device is being charged.   
     
     
         10 . The control method according to  claim 9 , further comprises:
 acquiring, by the computer, an external temperature of the vehicle; and   calculating, by the computer, the threshold temperature on a basis of the acquired external temperature of the vehicle.